That sounds hopeful. Please let her be if at all possible. I was told to have a heating lamp and to rub the pups but then a breeder friend told me to leave everything alonea s the pups would crawl to the mom's body heat and let her deal with cleaning the ups. That worked. I learned a lot that night, mainly to trust the dog. I cringed when I saw her chew the umbilical cords but she did fine.
A few days later, she pulled every pup, one by one, towards her by that dried up cord and nibbled it off to the skin. Again, I almost freaked out but had confidence in that she knew what she was doing. And she did! All was left was a tiny red spot on those bellies and none were injured. Later I became a birth doula for human babies and again, too many interventions lead to often unnecessary complications.